Which Conversion Coating is Right for Your Process ?

With the addition of Torch Surface Technologies, we offer you innovative technologies for iron, zinc and manganese phosphates and zirconium conversion coating processes. Whether you’re looking to provide a corrosion-resistant base coat, improve paint adhesion, help with cold forming or minimize wear, we can help.

Hero Products

Emerald Paint Prep


Emerald Paint-Prep is a line of low temperature, phosphate-free zirconium conversion coatings offers a cost-effective alternative to iron phosphate.

Hubfos 150


Hubfos 150 provides superior corrosion resistance when compared to traditional iron phosphates and many newer phosphate-free technologies.

Mi-Phos 22PW EX


Mi-Phos 22PW EX is a liquid concentrate that cleans and produces a tenacious phosphate undercoating on steel and some alloys of zinc and aluminum.

TCJ Zinc Phosphates


Torch’s line of “Heavy” zinc phosphates is designed to provide the ultimate performance in corrosion protection for Phos & Oil and Dip Spin Applications.  Meets automotive & military specifications.

Micron MP Phosphates


Torch’s line of microcrystalline zinc phosphates improves adhesion and salt spray performance of paints and coatings. Better results with a lower temperature operation and reduced sludge.

Bond Guard ZRC


Torch’s Bond Guard ZRC is a family of zirconium conversion coating processes to provide advanced bonding and anti-corrosion treatment for all metals while providing significant cost savings.

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Iron Phosphate Coating

Iron phosphates produce an amorphous coating that, when applied to the base substrate, becomes a receptive surface for painting and contributes to the overall improvement in quality of the painted part. Some iron phosphates also exhibit synergistic properties with traditional corrosion inhibitors to provide economical storage protection from corrosion.

pHRecommended Operating TemperatureConcentrationSoak TimeFluoride-Free
Hubfos 1504.4110-170°F4%0.5-3 min.x
Mi-Phos 264-590-175°F4%0.5-5 min.

Manganese Phosphate Coating

Manganese phosphates are applied by immersion to mild steel alloys for wear resistance/lubrication.

pHRecommended Operating TemperatureConcentrationSoak TimeWater Soluble
Mi-Phos M-5NA200-210°F6%1-2 hrs.x

Zinc Phosphate Coatings

Zinc Phosphates are available in a wide range of coating weights and crystal sizes. Depending on the type of crystal structure these coatings provide the following uses: base for paint adhesion, corrosion resistance coating and an aid to cold forming.

pHRecommended Operating TemperatureConcentrationSoak TimeWater-soluble
Mi-Phos Z-22190-200°F6%15-30 min.x
Mi-Phos Z-101180-185°F6%1-5 min.x

Phosphate-Free Conversion Coatings

Hubbard-Hall’s Emerald Paint-Prep line of low temperature, phosphate free, water soluble conversion coatings offer a cost effective alternative to iron phosphate. Formulated to replace traditional iron phosphates, these coatings can reduce energy usage and environmental concerns, while increasing corrosion protection.

pHRecommended Operating TemperatureConcentrationSoak TimeSpray wand application
Emerald Paint Prep 380 NP<3Ambient2-4%15-60 sec.
Emerald Paint Prep 389 NP<580-110°F1-5%NAx
Emerald Paint Prep 390 LT<3Ambient2-4%15-30 sec.

How do you choose the right phosphate pre-treatment process?

Getting the right answer starts with asking the right questions. That’s why we’re here. 1-866-441-5831

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